Filtering means for lubricating systems



E. E. HANS.

FILTERING MEANS FOR LUBRICATING SYSTEMS.

APPucATloN man APH.19, 1920.

1,879,259, Patented May 24, 1921.

.i-''l a 4 j nl i [L 7 wir-1 H M7 Grammy EDMUND E. HANS,

Specification of Letters Patent.

0F KALAMAZO 0, MICHIGAN. FILTERING MEANS FOR LUBRICATING SYSTEMS;

' Patented May 24, 1921.

Application filed April 19, 1926. Serial No. 375,933. p

To all whom 'it may concern.'

A Be it known that I, EDMUND E. HANS, a

citizen of the United States, residiig at alamazoo, county of Kalamazoo, lchian, have invented certain new and useful mprovements in vFiltering Means for Lubricating Systems, of which the following is a specication.

This invention relates to improvements in filtering means for lubricating systems.

The main object of this invention is to provide an improved and very simple filtering means for lubricating systems which practically removes foreign matter from the lubricant, the same being well adapted to automobiles and tractor engines.

Objects relating to details of construction and operation will definitely appear from the detailed description to follow.

accomplish the objects of my'invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which .is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming part of this speciiication, in which:

Figure I isa detail view, partially in vertical section, of an internal combustion engine structure embodying the features of my invention.

Fig. v is an enlarged `detail section, tially in vertical section, through the pump and sump, the piping being in broken' sections.4

In the drawing similar numeralsf refi erence refer to similar parts throughout the several views. Referring to the drawing, I have illustrated various parts in conventional form,

as'the structural details form no part of this invention. I have shown my improvements embodied in an internal Acombustion engine, only such portions thereofs being shown `as I deem necessary tov lllus.- trate an adaptation of my improvements.

The crank shaft l is supported by bearings 2, 2 and 3, and has pitman rods 4: connected thereto inthe usual or desired manner, the shaft illustrated being a four-throw shaft."` Lubricant is conducted to the bearings 2, 2, 3 by means of the pipe 5 connected to the supply pipe 6 from the filter 14. In the embodiment shown in Fig. I, the crank has a longitudinal lubricant passage 8 therein providing conduits leading from the bearmgs 2 and Sito the pitman bear- 1ngs 9. The crank case 10 is adapted as a lubricant reservoir and to receive the lubricant escaping from the bearings lubricated. The crank case is providedwith a sump or well 1l.

The pipe 12 leads from the sump-11 to the intake of the pump 7, which discharges through pipe 13 to the filter 141ubricant dellvering from the filter 14 to the pipe y15 A to the supply pipe 6. A by-pass 16 connects from the pipe 13- to the piper 6 and contains a spring loaded valve 17 which isadjustable to any desired pressure. The pump 7 is of course driven by any suitable connection to the engine, not necessary to be shown.

In operation oil is taken from the sumpv 11 and delivered ordinarily by gear force p ump 7 t0 the filter 14, and the filtered oil passes out through the pipe 15 and pipe 6 to supply the bearings 2, 2, 3. If the filter becomes clogged or in any way overopened and the lubricant will be by-passed directly from the pump 7 to the earings to be lubricated. Also, if the engine is running at hi h speed and requires an extra amount o lubricant, the spring loadedl Avalve will open and permit the lubricant to pass. The' engine and other parts however, will operate at moderate spee ,as in starting and stopping and the like, to such ari-extent that all solids and forelgn matter will be passed from the sump intoi the filter, so that the result of this arrange` ment is that an extra supply of clean oil can be delivered, because itis only,v Inecessary that the small quantity of dirtyoil that collects in the sump be actually filtered. Having thus described my invention /what I claim as new and desire to secure by' 'IlettersPatentisz' f I 1. In a lubricating system for internal combustion engines, the combination with the parts to be lubricated, of'a crank case constituting an oil reservoir adapted to receive the lubricant escaping from such lubricated parts,- a sump,- a filter, a pump with its intake connected to the sump and delivering to the said filter, ply pipe from said filter to the arts 4to be lubricated, a by-pass from the de ivery pipe of said pump to the said lubricant supply pipe, and a spring' loaded valve worked, the spring loaded valve 17 will be a lubricant supin the an' byI-passa whereby the by-pass operates automatically under abnormal pressure.

\ bricated parts, a sump, a filter', a pump with 2. In a lubricatingsystem for internal combustion engines, the combination with the parts to be lubricated, of a crank case constituting an oil reservoir adapted to receive theflubricant-esoaping from such luits intake connected to the sump 'and delivering to the said filter, a lubricant supply pipe from said filter to the'parts to be lubr1 my hand yand seal in the presence of two witnesses.

EDMUND E. HANS.v [11. s.] Witnesses:

LUELLA G. GREENFIELD MARGARET L. GLASGOW. 

